Checker brick



FIG. 1 is a top, front, side perspective view showing my new design for a checker brick.

FIG. 2 is a top view thereof.

FIG. 3 is a bottom view thereof.

FIG. 4 is front view thereof, wherein the back view, left side view, and right side view thereof are identical to the front view.

FIG. 5 is front, side view thereof.

FIG. 6 is a bottom, front, side perspective view thereof; and,

FIG. 7 is a further top, front, side perspective view thereof. 

CLAIM The ornamental design for a checker brick, as shown and described. 